Be Sensitive to The World - Playful, Deliver Expectation and Have Depth

Make the Experience as Personal as Possible

If You Are Going to Provide Content Give Enough Choice

Make Inworld Advertising as Integrated as Possible

Be There In Person, Communicate and Learn

Have as Much Content as Possible Inworld and Not on Weblinks

Give the Environment Identity Make Social Activity Easy

Update: Nic over at Kzero points out that 13 is a very unlucky number. To save us all he has boiled this issue down to just 7 points! Way to go Nic! He is up to number 5 on Kzero - go check them out.Kzero: